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What is OllyDbg?

OllyDbg is a 32-bit assembler level analysing debugger. Emphasis on binary code analysis makes it particularly useful in cases where source is unavailable.

  • Debugs multithread applications
  • Attaches to running programs
  • Configurable disassembler, supports both MASM and IDEAL formats
  • MMX, 3DNow! and SSE data types and instructions, including Athlon extensions
  • Full UNICODE support
  • Dynamically recognizes ASCII and UNICODE strings - also in Delphi

and much, much more!

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The program is no longer updated. Last version, 2.01, released in September 2013, can be still downloaded from the official website.

OllyDbg Screenshots

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OllyDbg Features

OllyDbg information

  • Developed byOleh Yuschuk
  • LicensingProprietary and Free product.
  • Alternatives20 alternatives listed

Supported Languages

  • English

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OllyDbg was added to AlternativeTo by andrei0x309 on and this page was last updated .

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  • reverse-engineering
  • assembler



OllyDbg platform details


It works on all versions of 32-bit Windows.

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